Siemens Sitrans LR250 User Manual

Appendix A: Technical reference
A.2 Echo processing
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
235
Example: CLEF enabled
Vessel height: 1.5 m; CLEF range set to 0.5 m
①
default TVT
②
material echo selected
③
vessel bottom echo
④
echo marker
A.2.3
CLEF Range
Determines the level below which the CLEF algorithm will be used. Above this level the Center
algorithm is used when Hybrid is selected in
Position Detect (2.5.7.2.)
. CLEF Range is
referenced from Low Calibration Point (process empty level).
①
CLEF range
④
Low calibration point
②
(Center algorithm applied)
⑤
Sensor reference point
③
High calibration point
⑥
Low Calibration Point (process empty
level)

Siemens Sitrans LR250 Specifications

General

Brand	Siemens
Model	Sitrans LR250
Category	Transmitter
Language	English